Question

A 6% solution of urea is isotonic with

• A. 6% solution of Glucose
• B. 25% solution of Glucose
• C. 1 M solution of Glucose
• D. 0.05 M solution of Glucose

Answer 1

Answer: (C)

1 M solution of Glucose

Answer 2

Molarity of urea $=\frac{\frac{6}{60}}{\frac{100}{1000}}=1 \,M$

Hence, $1 \,M$ solution of glucose is isotonic with $6 \%$ urea solution.